Organic light emitting display module and organic light emitting display device having the same
Provided is an organic light emitting display module including an active area, a pad area, and a boundary area between the active area and the pad area. Unlike the active area and the pad area, since the boundary area does not include an inorganic layer, less stress is applied to the boundary area when the boundary area is bent. Display panel pads and touch sensing member pads are disposed at the same height without having a height difference therebetween. Thus, a dummy pad may be added to remove the height difference between the display panel pads and the touch sensing member pads.
1. A display device comprising:
a base layer including a display area and a non-display area comprising a pad area;
a transistor disposed on the display area;
a light emitting device disposed on the display area;
a first lower pad electrically connected to the transistor and overlapping the pad area;
a second lower pad electrically insulated from the transistor and overlapping the pad area;
a pad electrically connected to the first lower pad and overlapping the non-display area;
a thin film encapsulation layer disposed on the light emitting device;
a touch electrode disposed on the thin film encapsulation layer and overlapping the display area;
a first upper pad electrically insulated from the touch electrode, electrically connected to the first lower pad, overlapping the pad area, and disposed on the first lower pad;
a second upper pad electrically connected to the touch electrode, overlapping the pad area, and disposed on the second lower pad; and
a circuit board connected to each of the first upper pad and the second upper pad,
wherein the pad area is bent and disposed below the display area.
2. The display device of claim 1 , further comprising at least one organic layer and at least one inorganic layer disposed on the at least one organic layer between the first lower pad and the first upper pad and between the second lower pad and the second upper pad,
wherein the first lower pad and the first upper pad are electrically connected to each other through a through hole penetrating the at least one inorganic layer.
3. The display device of claim 2 , wherein the at least one organic layer and at least one inorganic layer overlap the display area and non-display area.
4. The display device of claim 2 , further comprising a protection layer covering the touch electrode and exposing the first upper pad and the second upper pad.
5. The display device of claim 1 , wherein the first lower pad and the second lower pad are disposed on a same insulating layer, and
wherein the first upper pad and the second upper pad are disposed on a same insulating layer.
6. The display device of claim 1 , wherein the second lower pad is electrically isolated.
7. The display device of claim 1 , wherein the second lower pad and the second upper pad are electrically insulated from each other.
8. The display device of claim 1 , further comprising an antireflection layer comprising a color filter.
9. An electronic device comprising:
a display panel;
a circuit board connected to the display panel; and
a housing accommodating the display panel and the circuit board,
wherein the display panel comprises:
a base layer including a display area and non-display area comprising a pad area;
a transistor disposed on the display area;
a light emitting device disposed on the display area;
a signal line electrically connected to the transistor and comprising a signal line portion overlapping the display area and the non-display area, and a pad portion extending from the signal line portion and overlapping the non-display area;
a lower pad electrically insulated from the transistor and overlapping the pad area;
a film encapsulation layer disposed on the light emitting device;
a touch electrode disposed on the thin film encapsulation layer and overlapping the display area;
an upper pad electrically insulated from the touch electrode, electrically connected to the signal line, overlapping the pad area, and disposed on the pad portion of the signal line;
a touch signal line electrically connected to the touch electrode and comprising a touch signal line portion overlapping the non-display area and a touch pad portion overlapping the pad area;
a touch pad electrically insulated from the transistor, electrically connected to the touch signal line, overlapping the non-display area, and disposed on the pad portion of the touch signal line;
a pad electrically connected to the upper pad and overlapping the non-display area; and
an integrated circuit connected to the pad and overlapping the non-display area, and
wherein the circuit board is connected to each of the upper pad and the touch pad, and
wherein the pad area is bent and is disposed below the display area.
10. The display device of claim 9 , further comprising at least one organic layer and at least one inorganic layer disposed on the at least one organic layer between the pad portion of the signal line and the upper pad and between the lower pad and the touch pad portion of the touch signal line,
wherein the pad portion of the signal line and the upper pad are electrically connected to each other through a through hole penetrating the at least one inorganic layer.
11. The display device of claim 9 , wherein the at least one organic layer and at least one inorganic layer overlap the display area and non-display area.
12. The display device of claim 9 , further comprising a protection layer covering the touch electrode and exposing the upper pad and the touch pad portion of the touch signal line.
13. The display device of claim 9 , wherein the signal line and the lower pad are disposed on a same insulating layer, and
wherein the upper pad and the touch signal line are disposed on a same insulating layer.
14. The display device of claim 9 , wherein the lower pad is floated.
15. The display device of claim 9 , wherein the lower pad and the touch pad portion of the touch signal line are electrically insulated from each other.
16. The display device of claim 9 , wherein the signal line portion and the touch pad portion are disposed on a same insulating layer.
17. The display device of claim 16 , wherein the touch signal line further comprises a conductive pattern disposed between the touch signal line portion and the touch pad portion and disposed on a different layer from the touch signal line portion.
18. The display device of claim 17 , wherein the conductive pattern is disposed on a same insulating layer as the lower pad.
19. The display device of claim 17 , wherein the conductive pattern overlaps an area where the base layer is bent.
20. The display device of claim 9 , further comprising an antireflection layer comprising a color filter.